I've posted in a prior thread about this. I have used it and feel that it is superior to UWorld's CCS program. There is no question that Uworld's Qbanks are the best, but as far as preparing for the CCS portion, I feel that their program is seriously lacking. CCS Cases has 100 cases, grading, and it's not a monthly fee. There are die-hard Uworld only folks out there, but probably because they've never tried anything else.